Assuming Linux with SystemD,
sudo systemctl edit docker
[Unit]
RequiresMountsFor=/path/to/external/volume
You can use a SATA caddy with its own power supply if your basic USB adaptor isn't able to draw enough.
this post was submitted on 22 Aug 2023
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Haven't seen this option before, will try today!
Thanks!
I wanted to plug one of them over USB, but it seems that docker just doesn't like to have volumes on external drives. AFAIK docker starts before the drive is fully mounted, preventing it from doing so. I couldn't find any reliable way to work around this (but I'm open to suggestions!).
You haven't said what operating-system you're using, how your mount was configured, or how you're starting docker or your containers. An external drive is the normal way to do this, though, and I do it on Linux with ZFS drives and docker-compose auto-starting the containers and it works fine.
You mean thinkcentre tiny?